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25 Cards in this Set
- Front
- Back
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What is the intermediate and definitive host(s) for Leucochloridium Variae? |
Intermediate: terrestrial/land snail Definitive: Warbler/Bird |
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How does Leucochloridium Variae affect it's intermediate host? |
Makes snail's eyespot swell and pulsates. Attracts bird. Affects snail's behavior |
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What are the intermediate and definitive hosts for Alaria Americana? Does it have a paratenic host? |
Intermediate: Fresh water snail Definitive host: wolves, coyotes, domestic dog, fox. Paratenic hosts (no development occurs): water snake |
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Who is the accidental host for Alaria Americana? |
Humans |
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What is the mode of transmission for Fasciola Hepatica? |
Consumption of raw aquatic veggies (ex. water cress) |
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Name the definitive and intermediate hosts for Fasciola Hepatica |
Int: Fresh water snail Definitive: Human, cattle, goat, deer, sheepW |
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What symptoms are there in Fasciola Hepatica? |
Pathology: inflammation of bile ducts, edema, fibrosis. Migrating juveniles can travel to ectopic regions: brains, eyes, skin. |
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What are the intermediate and definitive hosts for Ribeiroia Ondatrae ? Name one diagnostic feature of an affected intermediate host. |
Intermediate:(1)(fresh water snail (2) larvae of amphibians ( creates extra hind legs!) Definitive: herons, hawks, badgers |
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Name the intermediate and definitive hosts for Dicrocoelium Dendriticium |
Int: (1) Land (terrestrial snail) --> creates slime ball. (2) Ant eats slime ball, brain gets taken over and behavior changes to be out when definitive host is out Definitive host: cattle, pig, deer, |
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List pathology of dicrocoelium Dendriticium |
-No traumatic damage to intestinal wall or liver parenchyma. -No migrating juveniles to ectopic regions. Symptoms: chronic constipation, hepatocyte degeneration, inflammation of bile ducts. |
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What parasite infects the oviduct of a chicken/bird? |
Prosthogonimus Macrorchis |
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What parasite uses the snail and dragon fly nymph as intermediate hosts? |
Prosthogonimus Macrorchis |
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What parasites infect the liver? |
Fasciola Hepatica Clonorchis Sinensis Dicrocoelum Dendriticium |
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What are some pathological facts about clonorchis sinensis? |
-Can live for 8 years in humans -Reservoir hosts are: pigs, dogs, cats, rats, -Can be found in China, Japan, Taiwan, vietnam. |
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Name two reservoir hosts for S. Mansoni |
Rodents and Monkeys |
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Reservoir hosts for S. Haematobium? How host specific is the parasite? |
none. Most specific |
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What are some of the reservoir hosts for S. Japonicum? |
Rodents, cats, dogs, pigs, cattle, horses, deer. This is the least host specific of the genus. |
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What effect does each species of Schistosoma have in the chronic phase? |
Mansoni--> hepatic cirrhosis, Hepatosplenomegaly
Haematobium--> uclers in wall of bladder, hematuria
Japoncium: hepatic and pulmonary cirrhosis, hepatosplenomegaly, cerebral schistosomiasis. |
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What is the intermediate and definitive host for Paragonimus Westermani? |
Int: (1) freshwater snail (2) crab/crayfish Definitive host: human |
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Pathology of Paragonimus Westermani |
Symptoms: -Inflammatory response -parasite eaten by granulomas -If wanders to ectopic sites such as the spinal cord, this can cause paralysis. Pulmonary cases: -chronic coughing -sputum with blood -difficulty breathing
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Name characteristics of the digenean nervous system (NS)
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a) series of transverse commissures b) 3 main pairs of longitudinal trunks c) sensory endings extend from tegument d) cerebral ganglia with orthogonal NS
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What are some characteristics of digeneans?
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a) develops in at least 2 hosts b) subclass within trematoda c) parasitizes all classes of vertebrates d) first intermediate host is an gastropod |
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Name some characteristics of monogenea
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a) economic importance b) opisthaptor with hooks c) ectoparasite on fish gills
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Name characteristics of Digeneans |
(1) they parasitize all classes of vertebrates (2) develop in at least two hosts (3) First host is usually a mollusk (gastropod) or very rarely, and annelid. (4) dorsoventrally flattened (5) acoelomate body
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Describe the acute phase for Schistosomas. |
Occurs when schistosomas begin producing eggs. -Sufficient time and exposure has elapsed to give off the humoral response Egg production dramatically increases antigen release causing chills, fever, headache, malaise, muscle aches, GI discomfort fatigue. |
